Question

a concave mirror forms a real image of an object placed in front of it at a distance of 30cm of size three times the size of object find the focal length of the mirror and the position of the image​

Answer 1

Answer:

Given ,u=-30

m=-3

m=-v/u

-3=-v/-30

v=-90cm

1/v+1/u=1/f

1/-90+1/-30=1/f